{% macro install_packages(packages) -%}
{% if packages is defined and packages|length > 0 -%}
    {% if base_distro in ['centos', 'oraclelinux', 'rhel'] -%}
        RUN yum -y install {{ packages | join(' ') }} && yum clean all && rm -rf /var/cache/yum
    {%- elif base_distro in ['debian', 'ubuntu'] -%}
        {#-
          debian_package_install is a utility method to build up an appropriate
          set of commands to install packages in a debian-based environment that
          may include URL links to a .deb package
        -#}
        RUN {{ debian_package_install(packages) }}
    {%- endif %}
{%- endif %}
{%- endmacro %}

{% macro sed(file='', expressions=[]) -%}
{% if file != '' and expressions|length >0 %}
    RUN {% for expression in expressions %} sed -i "{{ file }}" -e "{{ expression }}" {% if not loop.last %} && {% endif %} {% endfor %}
{% else %}
    RUN echo "file and expressions must be set to use the sed macro"; /bin/false
{% endif %}
{%- endmacro %}

{% macro install_pip(packages, constraints = true) %}
{%- if packages is sequence and packages|length > 0 -%}
    pip --no-cache-dir install --upgrade{{ ' ' }}
    {%- if constraints %}-c /requirements/upper-constraints.txt {% endif -%}
    {{ packages | join(' ') }}
{%- else -%}
    true
{%- endif -%}
{% endmacro %}

{% macro configure_user(name, groups=None, shell=None, homedir=None) %}
{% set user=users[name] %}
{%- if not homedir %}
{% set homedir='/var/lib/' + name %}
{%- endif %}
RUN usermod --append --home {{ homedir }} --groups kolla {{ name }} \
    {%- if groups %}
    && usermod --append --groups {{ groups }} {{ name }} \
    {%- endif %}
    {%- if shell %}
    && chsh --shell {{ shell }} {{ name }} \
    {%- endif %}
    && mkdir -p {{ homedir }} \
    && chown -R {{ user.uid }}:{{ user.gid }} {{ homedir }}
{% endmacro %}

{% macro debian_fix_existing_user(package, lines) %}
RUN apt-get update \
    && apt-get -y install --no-install-recommends {{ package }} \
    || sed -i '/adduser/,+{{ lines }} d' /var/lib/dpkg/info/{{ package }}.postinst \
    && echo "configuring packages" \
    && dpkg --configure -a \
    && echo "done" \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*
{% endmacro %}

{% macro debian_haproxy_existing_user_fix() %}
{# NOTE(SamYaple): The postinst script breaks if the user 'haproxy' already exists #}
    {{ debian_fix_existing_user('haproxy', 1) }}
{% endmacro %}

{% macro debian_mongodb_existing_user_fix() %}
{# NOTE(hrw): The postinst script breaks if the user 'mongodb' already exists #}
{# TODO(hrw): Version in Debian 'testing' checks does user exists #}
    {{ debian_fix_existing_user('mongodb-server', 3) }}
{% endmacro %}

{% macro debian_opendaylight_existing_user_fix() %}
{# NOTE(egonzalez): The postinst script breaks if the user 'odl' already exists #}
    {{ debian_fix_existing_user('opendaylight', 1) }}
{% endmacro %}

{% macro install_kubectl() %}
    {% if base_arch == 'x86_64' %}
        ENV KUBE_ARCH=amd64
    {% elif base_arch == 'aarch64' %}
        ENV KUBE_ARCH=arm64
    {% else %}
        RUN echo 'There is no "kubectl" binary for {{ base_arch }}' \
            && /bin/false
    {% endif %}

    # TODO(mandre) check for file integrity instead of downloading from an HTTPS source
    RUN curl -o /usr/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v1.5.4/bin/linux/${KUBE_ARCH}/kubectl \
        && chmod 755 /usr/bin/kubectl
{% endmacro %}


{% macro install_fluent_plugins(plugins) -%}
{% if plugins is defined and plugins|length > 0 -%}
    {% if base_distro in ['centos', 'oraclelinux', 'rhel'] -%}
        RUN ulimit -n 65536 && gem install --minimal-deps {{ plugins | join(' ') }}
    {%- elif base_distro in ['debian', 'ubuntu'] -%}
        RUN ulimit -n 65536 && td-agent-gem install {{ plugins | join(' ') }}
    {%- endif %}
{%- endif %}
{%- endmacro %}

{% macro install_rabbitmq_plugins(plugins, version) -%}
    ENV PLUGINS_DIR /usr/lib/rabbitmq/plugins
{% if plugins is defined and plugins|length > 0 -%}
    {% for item in plugins %}
         RUN curl -L -o ${PLUGINS_DIR}/{{ item }} https://github.com/deadtrickster/prometheus_rabbitmq_exporter/releases/download/{{ version }}/{{ item }}
    {% endfor %}
{%- endif %}
{%- endmacro %}
